Snap-hook.



No. 682,684. Patented Sept. 17, mm.

0.. HAKEMEYEB.

SNAP HOOK.

(Application filed Oct. 22, 1900..

(No Model.)

UNITED STATE-s PATENT OFFICE.

CHARLES HAKEMEYER, OF PATERSON, NEW JERSEY.

SNAP-HOOK.

SPECIFICATION forming part of Letters Patent No. 682,684, dated.September 17, 1901. I Application filed OotoberZZ, 1900. Serial No.33,805. (No model.)

To alt whom it may concern:

Be it known that I CHARLES HAKEMEYER, a citizen of the United States,residing in Paterson, in the county of Passaic and State of New Jersey,have invented certain new and useful Improvements in Snap-Hooks; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters of reference markedthereon, which form a part of this specification. 1

This invention relates to snap-hooks; and it has reference particularlyto that form of device of this nature which comprises two substantiallysimilar members having a common pivot and disposed in relatively reversepositions, thus producing what is commonly known as a sister-hook.

The invention consists in the improved snap-hook, constructedsubstantially as will be hereinafter described, and finally embodied inthe clauses of the claim.

I have fully illustrated my invention in the accompanying drawings,wherein Figure l is a view in front elevation of the preferred form ofmy invention, the device being closed. Fig. 2 is a view like Fig. 1, ex-

cept that the device is open and a section of one of its members isshown as broken away to illustrate inclosed portions. Fig. 3 is a viewin side elevation of what is shown in Fig. 1, a portion of the devicebeing broken away on the line of the pivot of its members to showinclosed parts. Fig. 4 is a view of one of the hook members of thedevice shown in Fig. 1. Fig. 5 is a perspective view of a plate-springwhich controls said hook members; and Figs. 6, 7, and 8 are views of amodification of my invention, Figs. 6 and 7 being side views thereof,showing, respectively, the hook closed and open, and Fig. 8 being afront view of said hook.

Referring to the first five figures of the drawings, CL and h denote thetwo hook members, said hook members being pivotally conneoted at thefree ends of their shank portions by a pivot c, which penetrates anorifice d in each of them and has its ends riveted, as at e, in theusual manner, so as to main;

tain the members together. As usual, the adjacent faces of these membersare perfectly flat, with the exception that one of them has an integrallug c, which acts as a stop against which the other member may impingewhen the hook is closed, as in Fig. 1. I free end of the shank of thehook member 19 extends an integral loop f, towhich a strap or otherdevice carrying the snap-hook may be attached. One of the hookmemberssay the hook member bhas an annular boss or respondingly disposedin the other hook' member. Thus is afforded a medium which not onlytakes off of the pivot c a part of the strain which it would otherwisehave to assume, but which forms a chamber 1;. The said chamber 1' isprovided for the reception of a plate-spring in the form of a disk,which is preferably secured to either one of the members by means ofscrews 70. Said platespring is formed with a single diametrical crimp orbend Z. It also has an opening m, through which the pivot 0 extends. Inthe portion of the face of the other member which is opposed to saidplate-spring are formed elongated recesses n, which intersect each otherat the opening (1 of said member. When the parts have been assembled,with the plate-spring in position between the two hook members, thecrimp or bend Z is adapted to be received by the oueor the other of therecesses n, and thus hold the members open or closed, as the case maybe. The shape of the bend or crimp and the elasticity of theplate-spring should be such that the opening or closing of the hook,except by intention, is well insured against.

In the modification shown in the remaining figures the free end portionsof the shanks are enlarged and turned substantially at right angles tothe planes of the hook portions proper, the hook members being securedtogether by the pivot c the same as in the case of that form of myinvention already described. Thus apart, such as the ring 19, (shown inthe drawings,) which engages this form of the hook cannot be released bysimply opening the latter; but after the hook is From the opened it mustbe first turned at right angles. The hook members come together face toface when closing instead of wiping the one on the other, as in the caseof the other form of my invention.

If desired, a spiral spring may be employed to normally maintain thehook members together,whether the hook be of the form shown in the firstfive figures of the drawings or in the form of that shown in the lastthree figures. In the chamber '5, about the pivot c, is arranged saidspiral spring 1, the same having its ends turned in opposite directionsand parallel to its axis and projecting into orifices 8, formed in therespective members.

It will be observed that the projection g snugly fits the recess 72.They thus coast to practically constitute the bearing of the device, forthe riveted pivot 0 serves more as a means for keepingthe members closetogether than as the real bearing. It will be also observed that theprojection g extends from the member I) farther than the recess Itextends into the member ct. Thus the projection is Having thus fullydescribed my invention, what I claim as new, and desire to secure byLetters Patent, is

In a hook, the combination of two hookshaped members adapted to coact inengaging another part, one of said members having a circular recess onthe face thereof adjacent the other member and being also provided inthe bottom of said recess with two elongated grooves or recessesintersecting in the center of the circular recess, a continuous annularprojection on the other member extending into and snugly fitting thecircular recess and being of a depth slightly greater than the depth ofsaid circular recess and bearing with its face against the bottomthereof, a platespring secured to the annular projection-carrying memberand provided with a diametrical crimp or bend adapted to cooperate withthe intersecting grooves or recesses in the first-mentioned member, anda riveted pivot securing both mem bers close together,all said partssubstantially as and for the purposes described.

I In testimony that I claim the foregoingI I have hereunto set my handthis 16th day of l October, 1900. CHARLES I-IAKEMEYER.

Witnesses:

JOHN W. STEWARD, JAMES NEWTON.

